Guillaume dupmeyer



(No Model.)

G. DUPMEYER.

FURNACE GRATE.

Patented NOV. 10, 1896.

INVENTOR ai'l mm /l If.

WITNESSES:

ATTORN EYS.

UNITED STATES PATENT OFFICE.

GUILLAUM E DUPMEYER,

OF ANTVERP, BELGIUM.

FU RNACE-G RATE.

SPECIFICATION forming part of Letters Patent No. 571,111, dated November 10, 1896.

Application filed u y 1 3, 18 9 6- To all whom it may concern..-

Be it known that I, GUILLAUME DUPMEYER, a subject of the King of the Belgians, residing at Antwerp, Belgium, have invented certain new and useful Improvements in Furnace-Grates 5 and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of my present invention is to provide a grate-bar having reversible and interchangeable leaves, of simple, strong, and durable construction, and which grate-bar, besides furnishing a very large bearing-surface for the fuel to rest upon, furnishes a large heating-surface for the air passing between the bars and fuel, and by said highlyheated air causes a more complete combustion of the said fuel.

The invention consists in the improved grate-bar and its reversible and interchangeable leaves, and in the combination and arrangement of the various parts thereof, substantially as will be hereinafter more fully described and finally embodied in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicatecorresponding parts in each of the several views, Figure 1 is a perspective view of a grate-bar composed of my improved leaves; Fig. 2, a perspective view of a grate-bar composed of leaves slightly modified in construction of those shown in Fig. 1; Fig. 3, a front elevation of another modification; Fig. 4, a longitudinal section of a grate-bar composed of a series of leaves of the construction as illustrated in Fig. 3; Fig. 5, a front elevation, partly perspective, of one of the end leaves by means of which the grate-bar is secured to the frame; and Fig. 6, a detail perspective View of a portion of the frame and of the end leaf resting thereon.

In said drawings, Fig. 1, a represents a leaf of triangular shape and provided substantially in its centerwith a similarly-shaped opening 1), arranged in such a manner that the points or corners of said opening face sub- Serial No- 598,9'71. (N0 model.)

stantially the centers of the sides of the leaf. Said opening I) is adapted to receive a triangular-shaped supporting and connecting bar 0, as clearly shown in Fig 4, and is surrounded-either on one or both sides of the leafby a flange (1, serving to separate adjoining leavesand also to form slides for the ashes and cinders, as will be manifest. In each of the corners of the leaf is arranged an opening 6, penetrating the leaf in a horizontal direction and serving to increase the area for the circulation of air, which latter, by means of the regular arrangement of said openings with relation to the sides of the flange cl, surrounding the central opening I), will be equally divided up to both sides of said flange and its leaf, respectively.

In the modification illustrated in Fig. 2 the leaves a are square, and are accordingly provided in their respective centers with square openings Z2, each of which is surrounded by the flange d, the corners of each opening facing the centers of the sides of its respective leaf.

The leaves as illustrated in Figs. 1 and 2 are of uniform thickness, but it must be understood that their sides may be outwardly flaring, as at f, Figs. 3 and 4, to thus form an enlargement of uniform width all around the edges of the leaf.

The end leaves 1, which may be triangularshaped, or substantially square, as in Fig. 5, are provided at one side and at their upper portions with a projection g, having a downwardly-extending flange h, adapted to rest on and engage the recess of the end bar A, respectively, (see Fig. 6,) whereby the gratebar is held rigidly within the frame, as will be manifest.

The leaves a a may be separate and arranged on the connecting or supporting bar 0, passing through the openings 1) Z), or they,

may all be cast integral, the flanges d d, surrounding the said openings, separating the leaves and thus forming air-passages between them. I

From the foregoing description it can be seen that a grate-bar composed of triangularshaped or square leaves having similarshaped openings surrounded bya flange separating the said leaves offers a large bearingsurface for the fuel, and should said surface be worn out and thus become uneven it is simply necessary to slide the leaves from the supporting-bar and turn them around onethird or onequarter, respectively. As the air passing between said leaves, Which are hot, becomes highly heated before it passes through the fuel, a thorough combustion of the latter is obtained.

I do not intend to limit myself to triangular or square leaves, as other polygon al-shaped leaves will answer for the above-described purpose, provided their central openings are similarly shaped and their corners penetrated by horizontally-arranged openings; but

WVhat I claim as new, and desire to secure by Letters Patent, is

1. A grate-bar, consisting of aseries of po 1ygonal-sha1.)ed leaves, each of said leaves being provided substantially in its center with a polygonal-shaped opening, the corners of the opening facing the centers of the sides of its respective leaf, each leaf being also provided in each of its corners with an opening, a flange surrounding the central opening of each leaf, and a polygonal-shaped bar penetrating the central openings to thus support the leaves, all said parts, substantially as and for the purposes described.

2. A grate-bar, consisting of a series of polygonal-shaped leaves having their edges outwardly flaring, each of said leaves being provided with a central polygonal-shaped opening, the corners of the opening facing the centers of the sides of its respective leaf, each leaf being also provided in each of its corners with an opening, a flange surrounding the central opening of each leaf and a bar penetrating the said central openings to thus support the leaves, all said parts, substantially as and for the purposes described.

3. A grate-bar, consisting of aseries of polygonal-shaped leaves, each of said leaves bein g provided with a polygonal-shaped central opening, the corners of the opening facing the centers of the sides of its respective leaf, each of said leaves being also provided in each of its corners with an opening, means on one or both sides of each leaf to separate them, a bar penetrating the central openings of the leaves, and means on each end of the bar for securing the latter to a grate-bar frame, all said parts, substantially as and for the purposes described.

4. A grate-bar, consisting of a series of polygonal-shaped leaves having their edges outwardly flaring, each of said leaves being provid ed with a central polygonal-shaped opening, the corners of the opening facing the centers of the sides of its respective leaf,

each leaf being also provided in each of its corners with an opening, a flange surrounding the central opening of each leaf and a bar penetrating the said central openings to thus support the leaves, and means on each end of the bar for securing the latter to a grate-bar frame, all said parts, substantially as and for the purposes described.

In testimony whereof I have hereto set my hand in the presence of the two undersigned witnesses.

GUILLAUME DUPMEYER.

Vitnesses:

ALFRED WUNDERLICH, PIERRE PoHLnN. 

